/**
 * ProjectLaogai
 *
 * Copyright 2018  <seil0@mosad.xyz>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 *
 */

package org.mosad.seil0.projectlaogai.hsoparser

import org.jsoup.Jsoup

class TimeTableParser {
    private val days = arrayOf("Monday", "Tuesday" ,"Wednesday", "Thursday", "Friday", "Saturday")
    private var courseTTLinkList = ArrayList<CourseTTLink>()
    private var timeTableWeek = arrayOf<Array<Lesson>>()

    init {
        // create the timetable array
        for (i in 0..5) {
            var timeTableDay = arrayOf<Lesson>()
            for (j in 0..5) {
                timeTableDay += Lesson("", "","","")
            }
            timeTableWeek += timeTableDay
        }
    }

    /**
     * get the timetable from the given url
     * the timetable is organised per row not per column;
     * Mon 1, Tue 1, Wed 1, Thur 1, Fri 1, Sat 1, Mon 2 and so on
     */
    fun getTimeTable(courseTTURL: String): Array<Array<Lesson>> {
        val scheduleHTML = Jsoup.connect(courseTTURL).get()

        //val week = scheduleHTML.select("h1.timetable-caption").text()
        //println("$week successful!\n")

        scheduleHTML.select("table.timetable").select("td.lastcol").forEachIndexed { index, element ->
            timeTableWeek[index % 6][index / 6] = Lesson(element.select("div.lesson-subject").text(), element.select("div.lesson-teacher").text(), element.select("div.lesson-room").text(), element.select("div.lesson-remark").text())
        }

        return timeTableWeek
    }

    /**
     * parse all courses from the courses site at https://www.hs-offenburg.de/studium/vorlesungsplaene/
     */
    fun getCourseTTLinks(): ArrayList<CourseTTLink> {
        val courseHTML = Jsoup.connect("https://www.hs-offenburg.de/studium/vorlesungsplaene/").get()

        courseHTML.select("ul.index-group").select("li.Class").select("a[href]").forEachIndexed { _, element ->
            courseTTLinkList.add(CourseTTLink(element.attr("href"),element.text()))
        }
        return courseTTLinkList
    }

    @Suppress("unused")
    fun printTimeTableWeek (timeTableWeek: Array<Array<Lesson>>) {

        for (j in 0..5) print(days[j].padEnd(25 ,' ') + " | ")
        println()
        for (j in 0..5) print("-".padEnd(26 + (j.toFloat().div(j).toInt()), '-') + "+")
        println()

        for (i in 0..5) {
            for (j in 0..5) print(timeTableWeek[j][i].lessonSubject.padEnd(25 ,' ').substring(0,25) + " | ")
            println()
            for (j in 0..5) print(timeTableWeek[j][i].lessonTeacher.padEnd(25 ,' ').substring(0,25) + " | ")
            println()
            for (j in 0..5) print(timeTableWeek[j][i].lessonRoom.padEnd(25 ,' ').substring(0,25) + " | ")
            println()
            for (j in 0..5) print("-".padEnd(26 + (j.toFloat().div(j).toInt()), '-') + "+")
            println()
        }
        println()
    }

}